[vsnet-grb 493945] GCN/SWIFT_XRT_IMAGE_PROCESSED

[Bacodine]

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 31 Jul 21 14:51:15 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     1062273,   Seg_Num: 0
GRB_RA:          255.9871d {+17h 03m 56.9s} (J2000),
                 256.3543d {+17h 05m 25.0s} (current),
                 255.1374d {+17h 00m 32.9s} (1950)
GRB_DEC:         -37.8434d {-37d 50' 36.2"} (J2000),
                 -37.8721d {-37d 52' 19.6"} (current),
                 -37.7740d {-37d 46' 26.3"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       91 [cnts]
IMG_START_DATE:  19426 TJD;   212 DOY;   21/07/31
IMG_START_TIME:  53439.39 SOD {14:50:39.39} UT,   1050.9 [sec] since BAT Trigger Time
CENTROID_X:      315.23,  raw= 315  [pixels]
CENTROID_Y:      396.10,  raw= 396  [pixels]
ROLL:            263.48 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   231.03
GRB_POS_XRT_Z:   18.47
IMAGE_URL:       sw01062273000msxps_rw.img
SUN_POSTN:       131.05d {+08h 44m 12s}  +18.10d {+18d 06' 13"}
SUN_DIST:        128.64 [deg]   Sun_angle= -8.4 [hr] (East of Sun)
MOON_POSTN:       37.86d {+02h 31m 27s}  +12.23d {+12d 13' 34"}
MOON_DIST:       137.21 [deg]
MOON_ILLUM:      49 [%]
GAL_COORDS:      347.76,  2.17 [deg] galactic lon,lat of the burst
ECL_COORDS:      258.58,-14.96 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .